Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2020 12 14.  Predictions up to the next  14.0 days:

     Date     Time(NPP) NPP Lat/Lon Date Time(TERRA) TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/15/2020   10:38:46   ( -68.45,-161.22) 12/15/2020   10:39:55  ( -68.45,-161.21)    0.61                69
 12/15/2020   11:29:30   (  68.31,   6.26) 12/15/2020   11:29:23  (  68.28,   6.24)    3.25                 7
 12/15/2020   12:20:08   ( -68.02, 173.95) 12/15/2020   12:18:55  ( -68.06, 173.61)   14.75                73
 12/18/2020   02:55:41   ( -68.39, -45.38) 12/18/2020   02:56:23  ( -68.40, -45.38)    1.12                42
 12/18/2020   03:46:25   (  68.26, 122.09) 12/18/2020   03:45:51  (  68.23, 122.06)    3.32                34
 12/20/2020   18:22:04   (  68.96, -97.69) 12/20/2020   18:23:14  (  68.84, -96.58)   46.17                70
 12/20/2020   19:12:36   ( -68.34,  70.45) 12/20/2020   19:12:51  ( -68.35,  70.44)    1.17                15
 12/20/2020   20:03:19   (  68.21,-122.08) 12/20/2020   20:02:17  (  68.23,-122.05)    2.48                62
 12/23/2020   10:38:49   (  68.43,  18.78) 12/23/2020   10:39:47  (  68.44,  18.81)    2.30                58
 12/23/2020   11:29:30   ( -68.28,-173.72) 12/23/2020   11:29:18  ( -68.29,-173.75)    1.28                12
 12/23/2020   12:20:04   (  67.62,  -5.58) 12/23/2020   12:18:54  (  67.66,  -6.83)   52.87                70
 12/26/2020   02:55:44   (  68.38, 134.60) 12/26/2020   02:56:15  (  68.37, 134.61)    0.70                31
 12/26/2020   03:46:25   ( -68.23, -57.89) 12/26/2020   03:45:46  ( -68.22, -57.94)    2.89                39